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5. (x+12) = 92 - 22
5. (x+12) = 70
x+12 = 70 : 5
x+12 =14
x = 14 - 12
x = 2
5. ( x + 12 ) + 22 = 92
5. ( x + 12 ) = 92 - 22
5. ( x + 12 ) = 70
x + 12 = 70 : 5
x + 12 = 14
x = 14 - 12
x = 2
5(x+12)+22=92
5(x+12)=92-22
5(x+12)=70
x+12=70:5
x+12=14
x=14-12
x=2
5 ( x + 12 ) + 22 = 92
5 ( x + 12 ) = 92 - 22
5 ( x + 12 ) = 70
x + 12 = 70 : 5
x + 12 = 14
x = 14 - 12
x = 2
\(5\times\left(x+12\right)+22=92\)
\(5\times\left(x+12\right)=92-22\)
\(5\times\left(x+12\right)=70\)
\(x+12=70:5\)
\(x+12=14\)
\(x=14-12\)
\(x=2\)
Học tốt
a) \(70-5\left(x-3\right)=45\)
\(5\left(x-3\right)=25\)
\(x-3=5\)
\(\Rightarrow x=8\)
b) \(12+\left(5+x\right)=20\)
\(5+x=8\)
\(\Rightarrow x=3\)
c) \(130-\left(100+x\right)=25\)
\(100+x=105\)
\(\Rightarrow x=5\)
d) \(175+\left(30-x\right)=200\)
\(30-x=25\)
\(\Rightarrow x=5\)
e) \(5\left(x+12\right)+22=92\)
\(5\left(x+12\right)=70\)
\(x+12=14\)
\(\Rightarrow x=2\)
a. 70 - 5.(x - 3) = 45
5.(x - 3) = 70 - 45
x - 3 = 25 : 5
x = 5 + 3
x = 8
b. 12 + (5 + x) = 20
5 + x = 20 - 12
x = 8 - 5
x = 3
c. 130 - (100 + x) = 25
100 + x = 130 - 25
x = 105 - 100
x = 5
d. 175 + (30 - x) = 200
30 - x = 200 - 175
x = 30 - 25
x = 5
e. 5.(x + 12) + 22 = 92
5.(x + 12) = 92 - 22
x + 12 = 70 : 5
x = 14 - 12
x = 2
\(\left(d\right)30-x=200-175\)
\(30-x=25\)
\(x=5\)
\(\left(e\right)5\left(x+12\right)=70\)
\(x+12=14\)
\(x=2\)
tương tự 2 câu trên bạn tự làm câu cuối nhé, mình không ghi lại đề đâu
#quankun^^
a) 145- (125+x)=12
b) 5(x+12) +22=92
tik mk nha mk sẽ tik lại,làm câu kết luận luôn nha!!!!!!!!!thanks
a) 145 - ( 125 + X ) = 12
125 + X = 145 - 12
125 + X = 133
X = 133 - 125
X = 8
Vậy X = 8
b) 5.( X + 12 ) + 22 = 92
5.( X + 12 ) = 92 - 22
5.( X + 12 ) = 70
X + 12 = 70 : 5
X + 12 = 14
X = 14 - 12
X = 2
Vậy X = 2
Học tốt #
a) 145-(125+x)=12
125+x=145-12
125+x=133
x=133-125
x=8
Vậy x = 8
b) 5(x+12)+22=92
5(x+12)=92-22
5(x+12)=70
x+12=70:5
x+12=14
x=14-12
x=2
Vậy x = 2
mk nha mn
5*(x+12)-22=92
=>5*(x+12)=92+22=114
=>5x+12=114
=>5x=114-12=102
=>x=102:5=\(\dfrac{102}{5}\)
14x + 54 = 82
175 + (30 - x) = 2001
1551- 10 (x + 1) = 55
5 . (x + 12) + 22 = 92
6 . (x + 23) + 40 = 100
14x + 54 = 82
14x = 28
x = 2
175 + (30 - x) = 2001
30 - x = 1826
x = 30 - 1826
x = - 1796
1551 - 10 ( x + 1 ) = 55
10(x + 1) = 1496
x + 1 = 149,6
x = 148,6
5 . (x + 12) + 22 = 92
5 . (x + 12) = 70
x + 12 = 14
x = 2
6 . (x + 23) + 40 = 100
6 . (x + 23) = 60
x + 23 = 10
x = - 13
\(14x+54=82\)
\(\Leftrightarrow14x=82-54\)
\(\Leftrightarrow14x=28\)
\(\Leftrightarrow x=2\)
Vậy \(x=2\)
\(175+\left(30-x\right)=2001\)
\(\Leftrightarrow30-x=2001-175\)
\(\Leftrightarrow30-x=1826\)
\(\Leftrightarrow x=-1796\)
Vậy \(x=-1796\)
\(1551-10\left(x+1\right)=55\)
\(\Leftrightarrow10.\left(x+1\right)=1551-55\)
\(\Leftrightarrow10.\left(x+1\right)=1496\)
\(\Leftrightarrow x+1=\frac{1496}{10}\)
\(\Leftrightarrow x=\frac{1486}{10}\)
Vậy \(x=\frac{1486}{10}\)
\(5.\left(x+12\right)+22=92\)
\(\Leftrightarrow5.\left(x+12\right)=70\)
\(\Leftrightarrow x+12=14\).
\(\Leftrightarrow x=2\)
Vậy \(x=2\)
\(6.\left(x+23\right)+40=100\)
\(\Leftrightarrow6.\left(x+23\right)=60\)
\(\Leftrightarrow x+23=10\)
\(\Leftrightarrow x=-13\)
Vậy \(x=-13\)
5(x+12)+22= 92
5(x+12) = 92-12
5(x+12) = 80
(x+12) = 80:5
(x+12) = 16
x = 16-12
x = 4
k mk nha
5(x+12)+22=92 5(x+12)=92-22 5(x+12)=70 x+12=70:5 x+12=14 x=14-12 x=2